Antislipping device for automobile-tires



G. B. WAITE. ANTISLIPPING DEVICE FOR AUTOMOBILE TIRES.

APPLICATION FILED JUNE 4, I5'I7- Patented Feb. 8,1920.

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.vas providedwith a coating ofrubber.

The layersof the fabric are united in the stood that the holder is tightly clamped UNITED snares PATENT carton.

GUY B. WAI'IE, OF NEWS? YGRK N. Y.

ANTISLIFPING DEVICE FOR AUTOMOBILE-TIRES.

Specification of Letters Patent.

Application filed June 4. 1917. Serial No. 172.801.

To all whom it may concern: 7

Be it known that I, GUY B. lVArrE, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new. and useful Improvements in Antislip ping Devices for Automobile-Tires, of which. the following is a specification.

This invention relates toimprovements in anti-slipping devicesv for automobile tires and has for its object to provide a device which is simple in construction, durable, and efi'ective in operation.

This improvement relates to that character of anti-slipping devices which lie transversely across the tread of the tire and are spaced from each other around the tire, and retained in position by any suitable meanssecured to or positioned on opposite sides of the wheel.

.1 One of the particular objects of the invention, is to provide a type of transverse P516111? her which embodies a compressible anti-" slipping tractionelcment and a rigid casing or holder ior inclosing the same, and by i which the anti-slipping traction element is secured in position.

These and other ob ects. hereinalter set forth, are attained by the means illustrated in the accompanying drawing, in which Figure 1 is a perspective view of one of the transverse members.

Fig. 2, is aside-elevation of a portion of a tire (shown in dotted lines) showing several of the transverse men'rbers in 'position.

Fig. 3, is a plan view of one of the transverse members.

Fig. at, is 'a cross-section'on the line H ofF1g.3. I

Fig. 5, is a longitudinal section of one end of one of said members. y

-Fig. 6, is a plan view of a blank from which the casing or holder is formed, and. Fig. 7, is a view of a modified form 0f,-cas* The preferred form of the anti-slipping element of each of the transverse members, consists of a plug or pad 10 made up of a plurality of layers of fabric material known in the trade as friction or frictional fabric,

and which is constructed of suitable can usual manner, preferably by mica-hiding,

and the pad thus formed is then cut'to the desired size and shape for the purpose intended. The pad is used in this invention in a manner to'present the edges of the fabric on one side of the pad to the roadway, and as thus positioned, the edges of the fabric engage the roadway with sufiicient friction to prevent slipping.

, In the practical use of the pad constructed and presented to the roadway as above described, it has been found that the pressure imposed upon the pad has a tendency of spreading the same "in all directions, so that it has been. necessary to provide a rigid .holder or casing tor the pad which will completely. confine and inclose all sides, includingthe bottom of the pad, only excepting the side or surface which'is to engage the roadway.

The

referred form of holder is clearly shown 111 Fig. 1 of the drawing, and the Pad 10 is preferably formed to the shape disclosed by the dotted lines at 15 in Fig. 6,

Patented Feb. 3, 1920.

so that when the sides of the blank are folded at an angle to the bottom on the-dot,- ted lines 16, the ends of the blank will form the cars 12 when brought together in close contact, thereby forming double ears.

This manner of folding or compressing the blankaround the compressible anti-slipping padfirmly incloses thb same excepting the tread surface, so that, when pressure is' imposed upon the pad inrunning over the roadway, it is compacted within the holder dtorming an almost solid mass.

lit has been discovered in practical use, he padv ll pick up sand and other gritty matori s from the roadway, and as the pad is being compressed within. its holder, the gritty materials will become firmly embedloo dad and serve to further add tothe eflicien cy of the anti-slipping element.

Preferably when the device is firstformed,

the pad is thick enough to project slightly '-I.abo ve the upper edges of the inwardly in-':

clined sides of the holder, so :,tl1at, when is compressed, the holder-will be com pactly. and'completely filled. It is underaround the pad, sutliciently to prevent the pad from being accidentally displaced, andv as a further precaution to preventthe loss of the pad, the top edges 17 of the holder adjacent the cars 12, arc slightly pressed in wardly over the ends of the pad, as clearly shown in Fig. 3 of the drawing.

The holder is preferably slightly curved longitudinally, as shown at 18 in Figs. 1 and 5, so that only a short length oi the holder will normally rest upon the tread of the tire. This slight curvature will allow the tire to flatten on compression and without pressing against the ends of the holder, which would happen should. the holder be curved to conform to the tire. The'holder is partially fiat on its bottom and has rounded lower longitudinal edges 19, forming a substantially convex bottom as seen clearly in the cross-section shown in Fig. 2 of the drawing. This particular formation not only provides a flat seat for the holder upon the periphery of the tire, but at the same time the rounded edges will allow the holder to tilt without danger of cutting the tire.

As thus constructed, it will be seen, that a simple construction is provided which will form a holder that will clamp and retain a compressible anti-slipping pad, and which is formed from a blank of flat metal whose opposite sides at the ends are pressed intocontact with each other to form the closed ends of 'thecomplete holder and its double ears:

To retain the transverse members in post tion around the tire, a flexible connection is secured to the ears of holder at each end, each of said connections preferably compris ing a link 20 and a link hook 21, said hook being adapted to engage the usual type of chainsupports 22 that are positioned on both sides of the wheel. Links 20 are adapted to loosely engage through the apertures 13 of the holder, so that the'holder is free totilt in either direct or transversely, or rock longitudinally. Preferably these links 20 are closed by welding to prevent their accidental displacement or removal by the shock and strains imposed as the transverse members strilre the roadway. The sealed links also prevent the separation of the ends or cars under undue strains, it being understood that the inherent qualities of the metal. used for forming the holders is such, that it cannot be bent without considerable force.

The modified form shown in Fig. 7 is primarily formed by casting, it also being understood that the same is formed with suitable bendable material which eanbe clamped ti htly upon the anti-slipping: pad.

- 'aving thus fully described the invention, what is claimed is 1. A transverse member of the class described, comprising a holder "formed from a blank o't sheet-metal bent longitudinally ad-' 7 negates jacent its ends to provide end-walls and vertically disposed attaching ears, said blank also havlng its side-edges bent outwardly to form inclosing sides, and an anti-slipping pad positioned between said sides and clamped in position by said end-walls.

2. A transverse member of the class described, comprising a holder formed from a blank of sheet-metal bent longitudinally adjacent its ends to provide end-walls and vertically disposed attaching ears, said blank also having its side-edges bent outwardly to term inclosing sides, and an anti-slipping pad positioned between said sides, said endwalls having their outer edges bent inwardly to clamp said pad in position.

A transverse member otthe class described, comprising a holder formed from a blank of sheet-metal bent longitudinally adjacent its ends to provide end-walls and vertically disposed ears, said blank also having itsside-edges bent outwardly to form inclosing sides, said inclosing sides being inclined toward each other, and an anti-slipping pad seated in the holder between the walls thereof and retained in position by said inclined sides.

4:. A transverse member of the class described, cmbodying a holder formed of bendable metal and having a solid bottom, and closed side and end walls, said end walls also forming attaching ears, and a compressible and compactible anti-slipping pad seated in said holder and being clamped therein by said walls, said end walls being formed by extending said side walls around the ends of said pad and also extending them outwardly from. their pointof contact with each other adjacent to the ends of the pad to form the attaching ears.

5. A transverse member of the class described, embodying a holder formed of bendable metal and having a solid bottom, and closed side and end walls, said end walls also forming attaching ears, and a compressible and compactible anti-slipping pad seated insaid holder and beingclamped there-' in by tially bent over upon the top of the pad and being formed by extending said side walls around the ends of said pad and also extending them outwardly from their point of contact with each other adjacent to the ends ot' the pad to form the attaching ears.

6. In a transyerse'niember of the class de scribed, an anti slippmg pad holder formed from a blank of sheet metal, and which is bent longitudinally and centrally at its ends said walls, said end walls being parto provide end walls and attaching ears, and I also bent longitudinally on two'lines ar-- allel with its side edges and intermeiate ts ends to provide side walls and a bottom.

In testimony whereof I aithrmy signature.

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